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EP0256621A1 - Soupape de puisage à pression d'isolement - Google Patents

Soupape de puisage à pression d'isolement Download PDF

Info

Publication number
EP0256621A1
EP0256621A1 EP87304316A EP87304316A EP0256621A1 EP 0256621 A1 EP0256621 A1 EP 0256621A1 EP 87304316 A EP87304316 A EP 87304316A EP 87304316 A EP87304316 A EP 87304316A EP 0256621 A1 EP0256621 A1 EP 0256621A1
Authority
EP
European Patent Office
Prior art keywords
valve
pressure tapping
combined pressure
isolating valve
isolating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP87304316A
Other languages
German (de)
English (en)
Inventor
Mark Ian Tomlinson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Olympus Ormskirk Ltd
Original Assignee
Hattersley Newman Hender Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hattersley Newman Hender Ltd filed Critical Hattersley Newman Hender Ltd
Publication of EP0256621A1 publication Critical patent/EP0256621A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/14—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with ball-shaped valve member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F16K15/18—Check valves with actuating mechanism; Combined check valves and actuated valves

Definitions

  • the present invention relates to a combined pressure tapping and isolating valve.
  • tappings facilitate fluid flow measurements and are generally known.
  • One such known tapping is described in United Kingdom Patent Specification No. 2,0l9,533B.
  • This arrangement incorporates a needle valve and a ball valve to provide isolation.
  • the use of a needle valve restricts self centring.
  • a combined pressure tapping and isolating valve comprises a valve body defining a pressure fluid passage having two branches in respective ones of which valve closure members are disposed, resilient means urging one of the valve closure members into the closed position and a member for urging the other valve closure member, which is a ball, into the closed position, the closure members being displaceable to the open position to permit communication between a line in which the pressure is to be measured and a measuring device.
  • the first mentioned valve closure member is an elastomeric seated cone which is displaced against its associated resilient means by means of the probe of a manometer which forms the measuring device.
  • the cone is machined to accept the elastomeric seat and to locate the resilient means.
  • the ball is displaced by the pressure fluid on withdrawal of the member which hold it in the closed position.
  • this ball is urged off its seat by means of resilient means, the ball then being positively held between the resilient means and the member.
  • the member may be an externally screwthreaded stem which can be screwed into and out of an internally screwthreaded passage in the valve body.
  • the stem is provided with a shaped end which is protected by means of a lockshield.
  • the resilient means are springs.
  • the valve comprises a body having a housing l into which is inserted a secondary housing 2.
  • the housing l is formed to provide a valve seat 3 on which a valve ball 4 seats.
  • the valve ball 4 is held between a spring 5, which tends to urge the ball off the seat and a valve stem 6 which is provided with a squared end 7 for turning at its end remote from the ball 4 and is externally screwthreaded along at part of its length at 8.
  • the bore in which the stem is disposed is internally screwthreaded in complementary manner.
  • a washer 9 and 'O' ring seal l0 surround the stem and an internally screwthreaded lockshield ll is screwed onto the housing l, which is externally screwthreaded for the purpose.
  • This lockshield ll which is level with the end of the stem 6 in the closed position, protects the operative end 7 of the stem.
  • the end of the housing l remote from the end 7 of the stem is also externally screwthreaded at l2 for connection to the measuring point in the pipeline the pressure in which is to be monitored.
  • the secondary housing 2 houses a cone check valve.
  • the cone l5 is shaped to retain an elastomeric 'O' ring 20 which seats against a valve seat 26 provided by a shoulder on the internal surface of a through bore in the housing 2.
  • This valve cone l5 is also shaped at 2l to locate a spring l6 which urges the cone l5 towards the seat l6 to the closed position.
  • the housing 2 is externally screwthreaded and onto this screwthreaded portion is screwed a complementary internally screwthreaded cap l7 which is connected additionally to the body by means of a safety tab l8.
  • a washer l9 surrounds the housing 2 within the cap l7.
  • valve In use, the valve is connected to the pipe or duct the pressure and flow in which is to be monitored. Usually two valves are connected to the line on opposite sides of, for example, an orifice plate so that the pressure differential across the plate may be measured and the flow determined from that using appropriate graphs or formuli.
  • valves are connected to the pipelines either directly or through an adapter through the externally screwthreaded end l2.
  • a manometer is attached to housing 2 after removing cap l7.
  • the manometer comprises a probe which displaces the ball l5 from its seat against the force of spring l6.
  • the stem 6 is screwed out thus allowing the ball 4 to be pushed off its seat by means of the spring 5. This provides a pressure fluid passage from the pipeline permitting a measurement to be made. Closing the valve down is the reverse of the procedure just described.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Safety Valves (AREA)
  • Measuring Fluid Pressure (AREA)
EP87304316A 1986-05-23 1987-05-15 Soupape de puisage à pression d'isolement Withdrawn EP0256621A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB868612663A GB8612663D0 (en) 1986-05-23 1986-05-23 Pressure tapping & isolating valve
GB8612663 1986-05-23

Publications (1)

Publication Number Publication Date
EP0256621A1 true EP0256621A1 (fr) 1988-02-24

Family

ID=10598376

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87304316A Withdrawn EP0256621A1 (fr) 1986-05-23 1987-05-15 Soupape de puisage à pression d'isolement

Country Status (2)

Country Link
EP (1) EP0256621A1 (fr)
GB (2) GB8612663D0 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2245210A (en) * 1938-01-28 1941-06-10 Henry N Greis Back pressure valve system
GB2019533A (en) * 1978-04-21 1979-10-31 Crane Ltd Pressure tapping valve unit
DE3002768A1 (de) * 1980-01-26 1981-07-30 GWK Gesellschaft zur Wiederaufbereitung von Kernbrennstoffen mbH, 7514 Eggenstein-Leopoldshafen Druckabsperrventil und damit versehene gasflasche
EP0140106A2 (fr) * 1983-09-17 1985-05-08 Ninnelt GmbH und Co. KG Soupape de soutirage pour prélever des gaz combustibles condensés d'un réservoir de stockage
DE3622527C1 (de) * 1986-07-04 1987-05-07 Draegerwerk Ag Ventil fuer Gasbehaelter

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB815946A (en) * 1957-04-25 1959-07-01 Worthington Corp Fluid control valves
GB344686A (en) * 1929-04-22 1931-03-12 Knut Jonas Elias Hesselman Improvements in spring-loaded valves
GB760427A (en) * 1953-05-28 1956-10-31 Bendix Aviat Corp Valve unit for containers of pressurized fluids
US4043357A (en) * 1975-09-17 1977-08-23 Braukmann Armaturen Ag Filter fitting for heating installations
US4050477A (en) * 1975-10-31 1977-09-27 International Telephone And Telegraph Corporation Valve
US4339233A (en) * 1979-12-13 1982-07-13 Krueger Wallace F Power-assisted valve
DE3316736A1 (de) * 1983-05-07 1984-11-08 Gewerkschaft Eisenhütte Westfalia, 4670 Lünen Absperrventilvorrichtung fuer hydraulische hochdrucksysteme, insbesondere hydraulische ausbausysteme in bergbaubetrieben
GB2190464A (en) * 1986-05-07 1987-11-18 Maurice Binder Pipe fitting

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2245210A (en) * 1938-01-28 1941-06-10 Henry N Greis Back pressure valve system
GB2019533A (en) * 1978-04-21 1979-10-31 Crane Ltd Pressure tapping valve unit
DE3002768A1 (de) * 1980-01-26 1981-07-30 GWK Gesellschaft zur Wiederaufbereitung von Kernbrennstoffen mbH, 7514 Eggenstein-Leopoldshafen Druckabsperrventil und damit versehene gasflasche
EP0140106A2 (fr) * 1983-09-17 1985-05-08 Ninnelt GmbH und Co. KG Soupape de soutirage pour prélever des gaz combustibles condensés d'un réservoir de stockage
DE3622527C1 (de) * 1986-07-04 1987-05-07 Draegerwerk Ag Ventil fuer Gasbehaelter

Also Published As

Publication number Publication date
GB2190728B (en) 1990-06-13
GB8612663D0 (en) 1986-07-02
GB2190728A (en) 1987-11-25
GB8711520D0 (en) 1987-06-17

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Legal Events

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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AK Designated contracting states

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Designated state(s): DE ES FR IT NL SE

STAA Information on the status of an ep patent application or granted ep patent

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18D Application deemed to be withdrawn

Effective date: 19880825

RIN1 Information on inventor provided before grant (corrected)

Inventor name: TOMLINSON, MARK IAN